Search Dictionary
Definition of eta

eta

/ˈeɪ.tə/
e · ta
Plural:etas
JUMP TO:

eta Lexical Profile

eta Game Scores & Validity

• noun

1

An abbreviation for 'estimated time of arrival', indicating when a vehicle, vessel, person, or delivery is expected to reach its destination.

Example

"Please check the navigation app and let them know our ETA so they do not wait outside in the cold."

2

The seventh letter of the Greek alphabet (Η, η), transliterated as 'e' or 'ē'.

Example

"In physics and engineering, the lowercase Greek letter eta is commonly used to represent efficiency or viscosity."

• Rhymes for eta

• Nearby Words

estuary
eswatini
et
eta
etailer
etch
etcher

Word Origin & Etymology

Borrowed from Ancient Greek ἦτα (ēta), which was adapted from the Phoenician letter heth.

Cite this Entry

Wordmom. (2026). Definition of Eta. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/eta
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.